Final answer:
The competition for colonies among European countries in the 19th century created a culture of militarism and nationalism, leading to tensions and rivalries as nations sought to expand their power.
Step-by-step explanation:
The competition of European countries for colonies created a culture of militarism and nationalism. As nations sought to expand their power and showcase their strength, they often did so through military buildup and a sense of national pride. This led to tensions, rivalries, and, in some cases, war as European powers competed for territory and resources. Nationalism also played a role in the desire for national unification or independence among ethnic groups within empires, which could threaten the stability of empires with diverse populations.